Bulk discount available
Subtotal (1 pack of 10 units)*
£2.33
(exc. VAT)
£2.80
(inc. VAT)
FREE delivery for orders over £50.00
In Stock
- 100 unit(s) ready to ship
- Plus 50 unit(s) ready to ship from another location
- Plus 1,920 unit(s) shipping from 29 October 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit | Per Pack* |
|---|---|---|
| 10 - 90 | £0.233 | £2.33 |
| 100 - 490 | £0.226 | £2.26 |
| 500 - 1490 | £0.22 | £2.20 |
| 1500 - 2490 | £0.214 | £2.14 |
| 2500 + | £0.209 | £2.09 |
*price indicative
- RS Stock No.:
- 647-8409
- Mfr. Part No.:
- MF-USMF050-2
- Brand:
- Bourns
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Bourns | |
| Trip Current | 1A | |
| Voltage Rating | 13.2V | |
| Time to Trip | 0.1s | |
| Hold Current | 0.5A | |
| Maximum Current | 40 A | |
| Length | 3.43mm | |
| Height | 0.85mm | |
| Width | 2.8mm | |
| Terminal Material | Electroless Nickel Immersion Gold | |
| Minimum Resistance | 0.18Ω | |
| Maximum Resistance | 900mΩ | |
| Power Dissipation | 0.6W | |
| Minimum Operating Temperature | -40°C | |
| Package Size | 1210 | |
| Maximum Operating Temperature | +85°C | |
| Operating Temperature Range | -40 → +85 °C | |
| Dimensions | 3.43 x 2.8 x 0.85mm | |
Select all | ||
|---|---|---|
Brand Bourns | ||
Trip Current 1A | ||
Voltage Rating 13.2V | ||
Time to Trip 0.1s | ||
Hold Current 0.5A | ||
Maximum Current 40 A | ||
Length 3.43mm | ||
Height 0.85mm | ||
Width 2.8mm | ||
Terminal Material Electroless Nickel Immersion Gold | ||
Minimum Resistance 0.18Ω | ||
Maximum Resistance 900mΩ | ||
Power Dissipation 0.6W | ||
Minimum Operating Temperature -40°C | ||
Package Size 1210 | ||
Maximum Operating Temperature +85°C | ||
Operating Temperature Range -40 → +85 °C | ||
Dimensions 3.43 x 2.8 x 0.85mm | ||
MF-USMF Series
Fast tripping resettable circuit protection
Surface mount packaging for automated assembly
Small footprint size (1210)
Surface mount packaging for automated assembly
Small footprint size (1210)
Surface Mount Technology
Resettable fuses are designed for the protection of electrical and electronic circuits against excessive currents. They switch rapidly from a low resistance to very high resistance state under electrical overload or short circuit conditions, and feature automatic reset and return to low resistance state when fault condition ceases and power is removed.
Maintenance free automatic reset for thousands of cycles
Small size and no fuseholder required
Small size and no fuseholder required
Main applications
Security systems
Power supplies and transformers
Power switching devices
Automotive and medical equipment
Instrumentation and control
Computers and peripherals
Audio visual and telecommunications
Power supplies and transformers
Power switching devices
Automotive and medical equipment
Instrumentation and control
Computers and peripherals
Audio visual and telecommunications